I help another member to ask the following question. I am looking forward to some help. Thanks.
( https://itch.io/jam/jam-for-all-basic-dialects/topic/1322278/is-there-a-good-bas... )
"I need a fantasy console that's programmable in BASIC and that has maps that function like the ones of the TIC-80, i mean that the camera scrolls throuth the map smoothly on the TIC-80 and other popular fantasy console, while in others (like the LowRes NX) the programmer has to load gradually the map from another source, beacuse there's a map buffer that's small, like old games on the Sega Genesis. I was able to make this comparisons emulating Sonic 3 for the Sega Genesis in BizHawk, and looking at the backgrounds in the Video RAM Scanner. I can see that the level isn't loaded all at once, but it's loaded in 32x32 backgrounds gradually, if i had made a platformer with powerful debug tools for both the TIC-80 and the Sega Genesis or the LowRes NX, you would see that if you teleport to a long distance away from the current camera position, you would see that in the TIC-80 version the camera centers at the player position immediately, because it has previously loaded the entire map at once, while in the LowRes NX version, it would take some time to move the camera to the player's position, because it need to gradually load the map to find the player's coordinates and go to them. This waiting would be hard to see with fast fantasy consoles, because the camera scolling routines are very fast.

Also, if the map buffer can't hold the whole map at once, the programmer has to make complex routines to load the map gradually, which would waste time and get the programmer frustrated. While in fantasy console where the map is loaded all at once, even a beginner programmer has to only use a few commands and he can scroll the map smoothly without any bugs or trickeries to worry about."